APFDBSE Pilot Rotary Drill Bit
Product Name:APFDBSE Pilot Rotary Drill Bit
Specially designed for 400-3000mm diameter, depending on stratums, choose different cutter teeth(flat teeth,
pick, bauer teeth),removable pilotbits, easy disassembly.
Higher water content of the sand layer, silty clay ,dense clay, sand and gravel layer, gravel layer, shell layer,
iron sand, high strength permafrost, strong weathered rock and soft stratums and complex stratums.